Speed controller for breeze ceiling fan
A speed governor and ceiling fan technology, applied in the direction of a single motor speed/torque control, electrical components, control systems, etc., can solve the problems of expensive frequency converters, the problem of breeze ceiling fan speed regulation is not well solved, etc., to achieve good tracking The effect of low frequency interference, low frequency interference and low manufacturing cost
Inactive Publication Date: 2012-08-15
SOUTHEAST UNIV
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Problems solved by technology
Since the Breeze Ceiling Fan uses a permanent magnet excited synchronous motor, its speed is determined by the frequency of the AC mains. Ordinary phase-modulation governors are unable to adjust its speed. Only a frequency converter can be used, and the frequency converter is expensive
Therefore, the speed regulation problem of the breeze ceiling fan has not been solved well.
Method used
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Embodiment Construction
[0020] see figure 1 , the AC mains power enters the AC cycle detection circuit 1 and the power drive circuit 3 at the same time, and the AC cycle detection circuit outputs a square wave signal with the same frequency and phase as the mains power to the external interrupt input port of the single-chip microcomputer in the proportional cycle control circuit 2, and the single-chip microcomputer according to the external The button circuit 4 has different key values, and outputs cycle signals of different proportions (when an interruption occurs, the count value of the internal counter of the microcontroller is compared with the corresponding number of the button mode, and the cycle of the required quantity is output. Due to the use of external interrupts, it has good real-time performance to ensure the cycle complete), the cycle signal is input into the power drive circuit 3, the output end of the power drive circuit and one end of the AC mains supply form the output ends A and B ...
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The invention discloses a speed controller for a breeze ceiling fan. The speed controller is arranged between an AC mains supply and the breeze ceiling fan and is connected with the AC mains supply; and an output end of the AC mains supply is in butt joint with an input end of the AC power supply of the breeze ceiling fan. The speed controller is provided with an AC cycle detection circuit, a proportion cycle control circuit and peripheral components thereof including a key switch and an LED display, and a power drive circuit. After passing through the AC cycle detection circuit, the AC mainssupply outputs a square signal with the same frequency and the same phase as the mains supply to an external interrupt input port of a singlechip in the proportion cycle control circuit. The single chip outputs cycle signals in different proportions according to different key values. The cycle signals are output to the power plug end of the breeze ceiling fan through the power drive circuit. A certain amount of complete cycle sine waves are selected and fed into the fan, the working frequency of the fan is changed, and the speed control of the breeze ceiling fan is realized.
Description
technical field [0001] The invention relates to the speed regulation of ceiling fans, in particular to a breeze ceiling fan governor. Background technique [0002] Breeze ceiling fans are daily necessities for people to escape the summer heat and enjoy the cool air. They are popular among the general public for their low price, power saving and energy saving. However, none of the breeze ceiling fans on the market has the function of speed regulation. After using them for a long time, some infirm, elderly and children often suffer from physical discomfort and even catch a cold and have a fever. Since the breeze ceiling fan uses a permanent magnet excitation synchronous motor, its speed is determined by the frequency of the AC mains. Ordinary phase modulation governors cannot adjust its speed. It can only be realized with a frequency converter, and the frequency converter is expensive. Therefore, the speed regulation problem of the breeze ceiling fan has not been well solved....
Claims
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IPC IPC(8): H02P6/08H02P27/02
Inventor 孙培勇颜知安
Owner SOUTHEAST UNIV